ADVERTISEMENT

CERN Identifies Rare Higgs Boson Decay into Two Muons

On August 2, at the 40th International Conference on High Energy Physics in Prague, CERN’s ATLAS (A Toroidal LHC ApparatuS) and CMS (Compact Muon Solenoid) experiments jointly announced new results which show that the Higgs boson decays into two muons—“heavier” second-generation copies of electrons. A first-of-its-kind observation, the process of...

Supercooled Ion Trap Measures Vibrational Frequency in Hydrogen

An international research collaboration headed by Vrije Universiteit Amsterdam (VU) scientist Jeroen Koelemeij developed a new method to measure vibrational frequencies in the molecular hydrogen ion (HD+) at 400 times higher precision than before. The technique enables an improved understanding of the fundamental laws of physics and particles such as...

Foundations of Cryocoolers Virtual Webinars

Plan now to join us for this in-depth exploration of all things cryocoolers! Normally presented in conjunction with the International Cryocooler Conference, the educational and experience-based Foundations of Cryocoolers Short Course is moving online with ICC. Perfect for cryogenic veterans and students alike, this online course will provide an invaluable...

ICCRT Postponed to 2021

Following restrictions imposed by Romanian Government to limit Covid19 outbreaks, including guidelines for organized indoor events, organizers of the International Conference on Cryocooler and Refrigeration Technologies were unfortunately constrained and made the decision to postpone the conference originally planned for October 7-10, 2020, in Bucharest to next year—the exact date...

Super-Kamiokande Gets an Upgrade to Detect Neutrinos from Ancient Supernovae

Buried 1-kilometer underground near the city of Hida, Japan, is a 40-meter tall cylinder filled with 50 million liters of water—the Super-Kamiokande neutrino observatory. Since 1996, it has been observing neutrinos—subatomic particles—from solar, extrasolar, terrestrial and artificial sources with highly sensitive optical sensors which record minute flashes of light that...

ADVERTISEMENT

Refrigerators and Liquefiers

Two of the most common terms used in cryogenics are “refrigerator” and “liquefier.” These terms describe similar and, as will be seen, in some cases identical components. A refrigerator provides cooling (that is, absorbs heat) at cryogenic temperatures. Refrigerators typically put a working fluid (such as helium) through one of...

Air Separation

Air separation is one of the largest, as well as earliest, industrial applications of cryogenics. In this process, cryogenic temperatures are used to separate air into its constituent gases: nitrogen (78.08%), oxygen (20.95%), argon (0.93%) and carbon dioxide (0.3%). Trace gases such as krypton, neon, xenon and helium total far...

Coefficient of Performance and Figure of Merit

The coefficient of performance (COP) is used to describe the effectiveness of refrigerators, including those operating at cryogenic temperatures. The COP is defined as the amount of heat removed at the cryogenic operating temperature of the refrigerator divided by the amount of work that must be applied to remove the...

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...

An Issue of Pressure and Flow Rate in a Supply Tank

Please help solve this problem: A supply tank requires a vaporizer to generate sufficient pressure to pump stored fluid up into a vehicle or tank. The available head is limited as the tank level falls and it is important to minimize the system pressure drop to maintain the desired flow...

Using MLI on VJ Line Joints or Cryo Storage Tanks

When installing Multi Layer Insulation (MLI) blankets on VJ line joints or cryo storage tanks should they be wrapped and tied down tight or loose? These are usually pre-cut to size. Also should they have an access hole at the point of where the molecular sieve is installed to help...